The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 2009
Filed:
Jan. 22, 2008
Peter Mohr, Wiggenbach, DE;
Wolfgang Bechteler, Biessenhofen, DE;
Stephan Gast, Schwabsoien, DE;
Josef Greif, Friesenried, DE;
Conrad Rösch, Pfronten, DE;
Peter Mohr, Wiggenbach, DE;
Wolfgang Bechteler, Biessenhofen, DE;
Stephan Gast, Schwabsoien, DE;
Josef Greif, Friesenried, DE;
Conrad Rösch, Pfronten, DE;
Ott-Jakob Spanntechnik GmbH, Lengenwang, DE;
Abstract
The subject matter of the present invention relates to a clamping device for clamping a tool or a tool holder () in a machine spindle (), comprising a drawbar () that can axially move back and forth between a clamping position and a release position, a clamping spring () for actuating the drawbar () in the direction of the clamping position, a minimum of one sensor () for monitoring the clamping force, and a clamping cone () having a plurality of clamping elements () that rest against its outside surface, which clamping elements, via the axial movement of the clamping cone () by means of the drawbar (), can be moved back and forth between a clamping position in which the tool or tool holder () is retained and a release position in which the tool or tool holder () is released. To make possible an easy and reliable transmission of the measured data acquired by the sensor throughout the operating range of the clamping device, a transponder assembly () with a stationary stator ring () and a rotor ring () that can be axially moved by the lifting movement of the drawbar () within the stator ring () is dedicated to the sensor () for the wireless transmission of data and energy.